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首页> 外文期刊>Journal of vibration and control: JVC >An alternative demodulation method using envelope-derivative operator for bearing fault diagnosis of the vibrating screen
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An alternative demodulation method using envelope-derivative operator for bearing fault diagnosis of the vibrating screen

机译：一种替代解调方法，使用包络衍生算子进行振动筛的轴承故障诊断

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摘要

The Teager–Kaiser energy operator (TKEO) and Hilbert transform (HT) are widely used as conventional demodulation methods in the signal processing field; however, it is well known that they are sensitive to vibration interference and noise, and these limitations hamper their applications, especially in the presence of strong noise. A vibrating screen is a kind of screening equipment in the field of vibrating machinery, which differs greatly from the rotating machinery in terms of structural characteristics and operational principles. The vibration signal extracted from the vibrating screen is not only comprised of multiple constituents but also a great deal of background noise. Thus, TKEO and HT have a large limitation on bearing fault diagnosis of the vibrating screen. To overcome these shortcomings, an alternative energy operator method named the envelope-derivative operator (EDO) is proposed. The results of simulation and bearing fault diagnosis of the vibrating screen indicate that EDO can effectively extract fault characteristic frequency, certifying its feasibility and superiority in comparison with TKEO and EDO.
机译：Teager-Kaiser能量操作员（TKEO）和HILBERT变换（HT）广泛用作信号处理领域的常规解调方法;然而，众所周知，它们对振动干扰和噪声敏感，这些限制妨碍了它们的应用，特别是在存在强烈的噪音。振动屏幕是振动机械领域的一种筛选设备，其在结构特征和操作原理方面从旋转机械差异很大。从振动屏中提取的振动信号不仅包括多个成分，而且包括多种成分，而且是大量的背景噪声。因此，TKEO和HT对振动屏的轴承故障诊断具有很大的限制。为了克服这些缺点，提出了一种名为包络导数运算符（EDO）的替代能源操作方法。振动屏的仿真和轴承故障诊断结果表明，江户伊博可以有效地提取故障特征频率，与Tkeo和EDO相比，认证其可行性和优越性。

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